Google expanded into the radio advertising business Tuesday with the purchase of DMarc Broadcasting, a company that deals with the sales, delivery and reporting of radio ads. The deal is reportedly worth $102 million dollars and will give AdWords subscribers a radio ad distribution channel for their advertisements.

Rumors have swirled in recent months that Google may expand into more traditional methods of advertising. The company has already branched into print ads, and was rumored to be looking into the television market as well. "Google is committed to exploring new ways to extend targeted, measurable advertising to other forms of media," said Google vice president of advertsing Tim Armstrong.